160 lines
4.5 KiB
JSON
160 lines
4.5 KiB
JSON
{
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"module": "dnsmasq",
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"version": "1",
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"upgrade": {
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"policy": "record",
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"why": "the mesh's resolver: a build that breaks it can stop a machine resolving the bus, and then neither the gate's rollback nor a push reaches it (hq ADR 0236, issue 260)"
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},
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"provides": [
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{
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"name": "wildcard-resolution",
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"scope": "mesh",
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"identity": false
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}
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],
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"requires": [
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"mesh-addressing"
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],
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"emits": [
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"name.added",
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"name.removed",
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"restarted",
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"restart-judged"
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],
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"own-secrets": {
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"broker": "${dir:mesh-state}/broker"
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},
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"claims": [
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{
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"name": "mesh-dns-resolver",
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"scope": "mesh"
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}
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],
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"tools": [
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"dnsmasq_health",
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"dnsmasq_names",
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"dnsmasq_resolve"
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],
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"listens": [
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{
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"name": "dns-udp",
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"port": 53,
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"protocol": "udp",
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"from": "mesh",
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"why": "one of the mesh's resolvers (ADR 0194, 0223): every node's and every container's resolver, beside any other holder of the seat — the mesh's own names answered here, a module's zone forwarded to it, the rest forwarded upstream",
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"fixed": true
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},
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{
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"name": "dns-tcp",
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"port": 53,
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"protocol": "tcp",
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"from": "mesh",
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"why": "the same names over tcp, which a resolver answers on as well and is asked for whenever an answer will not fit in a datagram. Declared because the daemon serves it: a declaration that covers one of the two protocols its own service listens on leaves the other closed while everything reports success",
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"fixed": true
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}
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],
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"resources": [
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{
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"id": "mesh-state",
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"type": "directory",
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"mode": "0700",
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"place": "mesh"
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},
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{
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"id": "package",
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"type": "package",
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"package": "dnsmasq"
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},
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{
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"id": "config",
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"type": "file",
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"path": "/etc/dnsmasq.conf",
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"mode": "0644",
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"template": "files/dnsmasq.conf"
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},
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{
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"id": "drop-ins",
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"type": "directory",
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"path": "/etc/systemd/system/dnsmasq.service.d",
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"mode": "0755"
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},
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{
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"id": "wait-for-address",
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"type": "file",
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"path": "/etc/systemd/system/dnsmasq.service.d/mesh.conf",
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"mode": "0644",
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"template": "files/mesh.conf"
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},
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{
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"id": "service",
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"type": "service",
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"unit": "dnsmasq.service",
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"state": "running",
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"boot": "enabled",
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"restart-on": [
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"config",
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"wait-for-address",
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"dnsmasq.fact-node-zones",
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"dnsmasq.fact-zones"
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],
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"health": {
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"kind": "unit"
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}
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},
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{
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"id": "watch-dir",
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"type": "directory",
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"path": "/var/lib/dnsmasq-watch",
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"mode": "0755"
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},
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{
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"id": "watch",
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"type": "process",
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"name": "dnsmasq-watch",
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"artifact": "tools",
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"run": [
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"./dnsmasq-tools",
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"watch"
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],
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"health": {
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"kind": "tool",
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"tool": "dnsmasq_health",
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"interval": "20s",
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"timeout": "10s",
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"looks": 2,
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"grace": "60s"
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}
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}
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],
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"facts": {
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"node-zones": {
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"path": "/etc/mesh-resolver/nodes.conf",
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"template": "# Generated by the mesh. Do not edit — this file is replaced whenever a machine\n# joins or leaves, and an edit would survive until then and vanish.\n\nlocal=/{{.Suffix}}/\n# A machine's own name is a host record as well as a wildcard: asked for an IPv6 address, the\n# resolver then says the name exists and has none, where the wildcard alone said there is no such\n# name — and a resolver that reads that as final (musl, so every Alpine container) failed to find\n# the machine at all (novox/hq issue 262).\n{{range .Machines}}address=/{{.FQDN}}/{{.Address}}\nhost-record={{.FQDN}},{{.Address}}\n{{end}}"
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},
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"zones": {
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"path": "/etc/mesh-resolver/zones.conf",
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"template": "# Generated by the mesh. Do not edit — this file is replaced whenever a module declares a zone or\n# its machine moves (novox/hq ADR 0199). One forwarding line per zone, to the module answering it.\n\n{{range .Zones}}server=/{{.Zone}}/{{.Address}}#{{.Port}}\n{{end}}"
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}
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},
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"build": {
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"artifacts": [
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{
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"name": "tools",
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"kind": "bundle",
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"language": "go",
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"system": "arch",
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"from": "cmd/dnsmasq-tools",
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"binary": "dnsmasq-tools",
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"loads": [
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"dnsmasq-tools"
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]
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},
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{
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"name": "files",
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"kind": "archive",
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"from": "files"
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}
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]
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}
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}
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